added post_id column for tweets and instagrams
embedded instagram videos
moved username to bottom
refactored feed controller
added rake task to clear half of db
renamed link_usernames to link_mentions. extracted related methods from add_post_links. renamed instagram_embed_video to embed_instagram_video
refactoring! removed twitter/instagram differentiating logic in link_mentions (unnecessary)
moved check for twitter post from youtube/vine to embed_twitter_content
refactor! in-lined some attribute/tweet parsing. renamed replace_links_with_youtube in tweet parser to replace_short_links.
removing swap file
Changed post text font size and changed font for links
make links in footer more visible
create environment service to manage api env variables
use environment service in api service
Merge pull request #40 from anirudh-eka/make_env_service

 create environment service to manage api env variables
Added Favicon to app
Center aligned created-at div
Update README.md
Changed link color
merged